A baby contributes by trying to make you smile. The baby will show off. A little older he will dance for you, bring you sticks, try to repeat your work motions to help you. If you dont accept those smiles, those dances, those sticks, those work motions in the spirit they are given, you have begun to interrupt the childs contribution. Now he will start to get anxious. He will do unthinking and strange things to your possessions in an effort to make them better for you. You scold him. That finishes him.

Something else enters in here. And that is data. How can a child possibly know what to contribute to you or his family or home if he hasnt any idea of the working principles on which it runs?